ZrO_(2)/不锈钢不同电导率复合材料的设计和制备  

Design and preparation of ZrO_(2)/stainless steel composite with different electrical conductivity

作　　者：赖旭平 刘禧莉 王良辉[2] LAI Xuping;LIU Xili;WANG Lianghui(Naval Equipment Department,Chengdu 610036,China;School of Materials Science and Engineering,Southwest Jiaotong University,Chengdu 610031,China)

机构地区：[1]海军装备部,四川成都610036 [2]西南交通大学材料科学与工程学院,四川成都610031

出　　处：《粉末冶金工业》2022年第5期19-23,共5页Powder Metallurgy Industry

基　　金：国家重点研发计划资助项目(2016YFB1200505);西南交通大学原创性科研仪器设备培育项目(XJ2021KJZK041)。

摘　　要：针对普通材料无法同时兼顾导电性能与力学性能这一问题,以316L不锈钢粉末和ZrO_(2)粉末为原料,采用真空热压烧结的方法,制备了具有梯度特征的ZrO_(2)/316L复合材料,其中316L不锈钢粉末的体积分数分别为50%、60%、70%、80%、90%,对复合材料的表观形貌和性能进行观察测试。结果表明,当烧结温度为1300℃,316L体积分数为50%时,该复合材料属于陶瓷基复合材料。当体积分数增大至60%后,复合材料开始形成316L骨架,并且随着316L体积分数的增加,其内部的不锈钢形态由弥散分布的独立球形转变为成片的连结状,最终变成金属基复合材料。复合材料的硬度和电阻率均随316L体积分数的增加而降低。Ordinary materials are not compatible with good conductivity and mechanical properties,using 316L stainless steel powder and ZrO_(2)powder as raw materials,the gradient ZrO_(2)/316L composite materials with the volume fraction of 50%,60%,70%,80% and 90% of 316L stainless steel powder were prepared by vacuum hot pressing sintering method,respectively.The results show that the composite is a ceramic matrix composite when the sintering temperature is 1300℃ and the volume fraction of 316L is 50%.When the volume fraction increases to 60%,the composite starts to form a 316L skeleton,and as the volume fraction of 316L increases,its internal stainless steel morphology changes from diffusely distributed independent spheres to linked in sheets and eventually becomes a metal matrix composite.The hardness and resistivity of the composites decrease with the increasing volume fraction of 316L.

关 键 词：真空热压烧结 ZrO_(2)/316L复合材料 陶瓷基体 金属基体 表观形貌 电阻率 

分 类 号：TB333[一般工业技术—材料科学与工程]